The calculated distance (air line) between Saint-Quentin-en-Yvelines and Courbevoie is approximately 14 miles respectively 22 kilometers.
By car or train, the actual journey to Courbevoie is certainly longer, as only the direct route (as the crow flies) between Saint-Quentin-en-Yvelines and Courbevoie has been calculated here.
Air line (approximately)
22 kilometers
12 nautical miles